What CI Actually Looks Like at a 100-Person Team
Summary
This post analyzes how a ~100-person, fully remote team (PostHog) runs CI at scale, including massive job counts, log throughput, and test volume. It introduces Mendral, an AI GitHub App that diagnoses CI failures, quarantines flaky tests, and opens PRs with fixes, while discussing the challenges of log ingestion, flaky tests, and proactive automation in a public repository.